-
漏洞信息 (F49031)

HP Security Bulletin - A potential security vulnerability has been identified in the Xserver running on HP-UX. The vulnerability could be exploited by a local user to execute arbitrary code with the privileges of the Xserver.

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
SUPPORT COMMUNICATION - SECURITY BULLETIN
Document ID: c00732238
Version: 1
HPSBUX02137 SSRT051024 rev.1 - HP-UX Running Xserver
Local Execution of Arbitrary Code, Privilege Elevation
NOTICE: The information in this Security Bulletin should be acted upon
as soon as possible.
Release Date: 2006-08-01
Last Updated: 2006-08-01
Potential Security Impact: Local execution of arbitrary code, privilege elevation
Source: Hewlett-Packard Company, HP Software Security Response Team
VULNERABILITY SUMMARY
A potential security vulnerability has been identified in the Xserver running on HP-UX.
The vulnerability could be exploited by a local user to execute arbitrary code with the
privileges of the Xserver.
References: CVE-2005-2495
SUPPORTED SOFTWARE VERSIONS*: ONLY impacted versions are listed.
HP-UX B.11.00, B.11.11, B.11.23 running the Xserver.
BACKGROUND
AFFECTED VERSIONS
To determine if an HP-UX system has an affected version,
search the output of "swlist -a revision -l fileset" for one of
the filesets listed below. For affected systems verify that the
recommended action has been taken.
HP-UX B.11.23
=============
Xserver.X11-SERV
action: install PHSS_32960 or subsequent
HP-UX B.11.11
=============
Xserver.X11-SERV
action: install PHSS_32966 or subsequent
HP-UX B.11.00
=============
Xserver.X11-SERV
action: install PHSS_32965 or subsequent
END AFFECTED VERSIONS
RESOLUTION
HP has made the following patches available to resolve the issue.
The patches are available from http://itrc.hp.com
HP-UX B.11.23 PHSS_32960 or subsequent
HP-UX B.11.11 PHSS_32966 or subsequent
HP-UX B.11.00 PHSS_32965 or subsequent
MANUAL ACTIONS: No
PRODUCT SPECIFIC INFORMATION
HP-UX Security Patch Check: Security Patch Check revision B.02.00 analyzes all
HP-issued Security Bulletins to provide a subset of recommended actions that
potentially affect a specific HP-UX system. For more information:
http://software.hp.com/portal/swdepot/displayProductInfo.do?productNumber=B6834AA
HISTORY
Version:1 (rev.1) - 01 Aug 2006 Initial release
Support: For further information, contact normal HP Services
support channel.
Report: To report a potential security vulnerability with any HP
supported product, send Email to: security-alert@hp.com. It is
strongly recommended that security related information being
communicated to HP be encrypted using PGP, especially exploit
information. To get the security-alert PGP key, please send an
e-mail message as follows:
To: security-alert@hp.com
Subject: get key
Subscribe: To initiate a subscription to receive future HP
Security Bulletins via Email:
http://h30046.www3.hp.com/driverAlertProfile.php?regioncode=NA&
langcode=USENG&jumpid=in_SC-GEN__driverITRC&topiccode=ITRC
On the web page: ITRC security bulletins and patch sign-up
Under Step1: your ITRC security bulletins and patches
- check ALL categories for which alerts are required and
continue.
Under Step2: your ITRC operating systems
- verify your operating system selections are checked and
save.
To update an existing subscription:
http://h30046.www3.hp.com/subSignIn.php
Log in on the web page:
Subscriber's choice for Business: sign-in.
On the web page:
Subscriber's Choice: your profile summary
- use Edit Profile to update appropriate sections.
To review previously published Security Bulletins visit:
http://www.itrc.hp.com/service/cki/secBullArchive.do
* The Software Product Category that this Security Bulletin
relates to is represented by the 5th and 6th characters of the
Bulletin number in the title:
GN = HP General SW,
MA = HP Management Agents,
MI = Misc. 3rd party SW,
MP = HP MPE/iX,
NS = HP NonStop Servers,
OV = HP OpenVMS,
PI = HP Printing & Imaging,
ST = HP Storage SW,
TL = HP Trusted Linux,
TU = HP Tru64 UNIX,
UX = HP-UX,
VV = HP Virtual Vault
System management and security procedures must be reviewed
frequently to maintain system integrity. HP is continually
reviewing and enhancing the security features of software products
to provide customers with current secure solutions.
"HP is broadly distributing this Security Bulletin in order to
bring to the attention of users of the affected HP products the
important security information contained in this Bulletin. HP
recommends that all users determine the applicability of this
information to their individual situations and take appropriate
action. HP does not warrant that this information is necessarily
accurate or complete for all user situations and, consequently, HP
will not be responsible for any damages resulting from user's use
or disregard of the information provided in this Bulletin. To the
extent permitted by law, HP disclaims all warranties, either
express or implied, including the warranties of merchantability
and fitness for a particular purpose, title and non-infringement."
(c)Copyright 2006 Hewlett-Packard Development Company, L.P.
Hewlett-Packard Company shall not be liable for technical or
editorial errors or omissions contained herein. The information
provided is provided "as is" without warranty of any kind. To the
extent permitted by law, neither HP nor its affiliates,
subcontractors or suppliers will be liable for incidental, special
or consequential damages including downtime cost; lost profits;
damages relating to the procurement of substitute products or
services; or damages for loss of data, or software restoration.
The information in this document is subject to change without
notice. Hewlett-Packard Company and the names of Hewlett-Packard
products referenced herein are trademarks of Hewlett-Packard
Company in the United States and other countries. Other product
and company names mentioned herein may be trademarks of their
respective owners.
-----BEGIN PGP SIGNATURE-----
Version: PGP 8.1
iQA/AwUBRNHa3eAfOvwtKn1ZEQLmjgCg3h8rFVqGGCEji1Lv/TW+II/jmlgAoJXy
IEZ9aYrOVD2TSkOzG9WvuLUz
=5oNG
-----END PGP SIGNATURE-----

Mandriva Linux Security Update Advisory - A vulnerability was discovered in the pixmap allocation handling of the X server that can lead to local privilege escalation. By allocating a huge pixmap, a local user could trigger an integer overflow that resulted in a memory allocation that was too small for the requested pixmap, leading to a buffer overflow which could then be exploited to execute arbitrary code with full root privileges.

Ubuntu Security Notice USN-182-1 - A local privilege escalation vulnerability has been discovered in the pixmap allocation handling of the X server. By allocating a huge pixmap, a local user could trigger an integer overflow that resulted in a memory allocation that was too small for the requested pixmap. This resulted in a buffer overflow which could eventually be exploited to execute arbitrary code with full root privileges.

-
漏洞描述

XFree86 contains an integer overflow condition in the pixmap allocation functionality. The issue is triggered as user-supplied input is not properly validated when handling pixmap images. With a specially crafted pixmap image, a context-dependent attacker can cause a buffer overflow, resulting in a denial of service or potentially execution of arbitrary code.

-
时间线

公开日期:
2005-09-13

发现日期:
2004-05-05

利用日期:Unknow

解决日期:2003-02-27

-
解决方案

It has been reported that this issue has been fixed. Upgrade to version 4.3.0, or higher, to address this vulnerability.